| 摘要 |
1,214,900. Making electrodes; electric cells. SOC. DES ACCUMULATEURS FIXES ET DE TRACTION. 9 Dec., 1968 [8 Dec., 1967; 27 Sept., 1968], No. 58477/68. Heading H1B. A process for making an electrode comprising a cup having active material on the walls thereof, comprises introducing a rod-like mandrel into the cup, distributing pulverulent active material in the annular space between the mandrel and the cup, compressing the active material to render it mechanically cohesive and removing the mandrel from the cup. The cup may be of zinc and the active material may be dry amalgamated zinc powder. Compression of the active material is achieved by reducing the diameter of the cup. This may be achieved by passing the cup through a reducing ring of slightly smaller diameter than the cup or by using the apparatus shown in Figs. 15 and 16 where Fig. 16 is a cross-section taken at BB. Cup 1 containing active material 5 and mandrel 22 is compressed by the sectors 32 of tapered split ring 31 when member 33 with a hole of equal taper is moved upwards wedging the sectors together as shown in Figs. 15 and 16 compressing the cup by a radial force only. When the cup has been compressed member 33 is lowered allowing springs 35 to open the split ring so that the cup can be removed. Assembly of the cell is completed after removal of the mandrel by insertion of a depolarizing dolly and carbon rod electrode, the addition of electrolyte and a further reduction in the diameter of the cell. |
